2-D CMUT wafer bonded imaging arrays with a row-column addressing scheme
Why this work is in the frame
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Bibliographic record
Abstract
This paper presents fabrication and characterization results of two-dimensional capacitive micromachined ultrasonic transducer arrays which use a row-column addressing scheme. The devices are fabricated using a wafer bonding process where both the insulation layer and the membrane are user deposited silicon nitride. Two types of arrays with different resonant frequencies are presented. One is a 32×32 element array which has a resonant frequency of 15 MHz. In immersion, when transmitting and receiving with columns a centre frequency of 5.45 MHz is measured with a relative -6 dB bandwidth of 119%. Using rows, a centre frequency of 5.75 MHz is measured with a -6 dB bandwidth of 135%. The other device is a 32×32 element array with a resonant frequency of 28 MHz and in immersion has a centre frequency of ~12 MHz. Membrane resonant frequency uniformity across the 15 MHz device has a measured standard deviation of 0.3%.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it